Asset Retirement Obligations (Tables)

6 Months Ended

Jun. 30, 2021

Asset Retirement Obligation Disclosure [Abstract]

Summary of Changes in Asset Retirement Obligations

The Company’s asset retirement obligations primarily relate to the Company’s portion of future plugging and abandonment costs for wells and related facilities. The following table presents the changes in the asset retirement obligations for the six months ended June 30, 2021 (in thousands):

Asset retirement obligations at beginning of period	$	97,149
Liabilities added from acquisition or drilling		29
Liabilities settled		(162	)
Liabilities removed upon sale of wells		(113	)
Accretion expense		3,253
Revision of estimates		3
Asset retirement obligation at end of period		100,159
Less: Current portion		(747	)
Asset retirement obligations - long-term portion	$	99,412